
We present an intrinsic metric that quantifies distances between power spectral density functions. The metric was derived by the author in a recent arXiv-report (math.OC/0607026) as the geodesic distance between spectral density functions with respect to a particular pseudo-Riemannian metric motivated by a quadratic prediction problem. We provide an independent verification of the metric inequality and discuss certain key properties of the induced topology.
7 pages
60G35; 58B20; 62B10; 94A17, 62B10, Optimization and Control (math.OC), Probability (math.PR), 58B20, FOS: Mathematics, 60G35, 94A17, Mathematics - Optimization and Control, Mathematics - Probability
60G35; 58B20; 62B10; 94A17, 62B10, Optimization and Control (math.OC), Probability (math.PR), 58B20, FOS: Mathematics, 60G35, 94A17, Mathematics - Optimization and Control, Mathematics - Probability
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